Magnetization reversal behavior in cobalt rare-earth thin films

S. S. Malhotra, Z. S. Shan, D. C. Stafford, S. H. Liou, D. J. Sellmyer

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Cobalt Rare-Earth (CoR , R = Pr,Sm) thin films on a Cr underlayer have shown promise as future ultra high density magnetic recording media. The activation volume or the magnetic switching volume (V*) is an important consideration for thermal stability and media noise in high density recording media and V* can also provide information about the magnetization reversal behavior in these films. The magnetic switching volume was estimated for the CoPr films with thicknesses from 28 to 639 nm with a Cr underlayer of 80 nm annealed at 500 °C. The measured switching volume ranges from 1. 3 to 1. 7×10-18 cm3. We have also studied the Cr underlayer thickness and temperature effects on the swithcing volume for the CoSm films.

Original languageEnglish (US)
Pages (from-to)4019-4021
Number of pages3
JournalIEEE Transactions on Magnetics
Volume32
Issue number5 PART 1
DOIs
StatePublished - 1996

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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